(19)

(11)

EP 4 554 903 A1

(12)

(43) Date of publication: 21.05.2025 Bulletin 2025/21 (21) Application number: 23741050.1 (22) Date of filing: 12.07.2023

(51) International Patent Classification (IPC):  C02F 3/12(2023.01) (52) Cooperative Patent Classification (CPC): C02F 3/1273; C02F 3/1268; C02F 2303/22; C02F 2303/20; C02F 2305/14; C02F 2209/06; C02F 2209/07; Y02W 10/10 (86) International application number: PCT/EP2023/069319 (87) International publication number: WO 2024/013231 (18.01.2024 Gazette 2024/03)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: KH MA MD TN (30) Priority: 15.07.2022 EP 22185239 (71) Applicant: Omya International AG 4665 Oftringen (CH)	(72) Inventors: NELSON, Nicholas Charles 8004 Zürich (CH) STEMANN, Jan 79594 Inzlingen (DE) (74) Representative: Maiwald GmbH  Elisenhof Elisenstraße 3 80335 München 80335 München (DE)